What’s the actual weirdest or most specific thing about R? NaNs.
An NaN is “not a number”; a numeric value that isn’t actually a value. In R these are just a form of NA; an NA in a character vector is an NA. An NA in a numeric vector is an NaN (or sometimes just an NA, depending on your compiler. Compilers are funny things.)
No, really. “NaN” to the user is the number 1954 to the computer. And the reason this is super-fun is why 1954 was picked - because it was Ross Ihaka’s year of birth.